Bring milk to a boil and gradually add sugar, stirring. Add baking soda. Cook for about an hour on low heat. Stir occasionally after 5-10 minutes.
After an hour, cover the pan and remove to a cool place to cool. When the condensed milk cools, shift into a jar and put in the refrigerator.
Condensed milk is ready for use, and without any additives it turns out excellent condensed milk. Keep it natural.)))